JP2019156439A - Packaging container - Google Patents
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- JP2019156439A JP2019156439A JP2018044555A JP2018044555A JP2019156439A JP 2019156439 A JP2019156439 A JP 2019156439A JP 2018044555 A JP2018044555 A JP 2018044555A JP 2018044555 A JP2018044555 A JP 2018044555A JP 2019156439 A JP2019156439 A JP 2019156439A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
Description
本発明は、包装容器に関する。より詳しくは、容器に収容された食品を加熱する際に、発生した蒸気を容器外に排出可能な構造を有する包装容器に関する。 The present invention relates to a packaging container. More specifically, the present invention relates to a packaging container having a structure capable of discharging generated steam to the outside when the food contained in the container is heated.
従来から、容器本体と中皿と蓋で構成される合成樹脂製の包装容器で、容器本体底部に発熱ユニットを収容し、食品等の内容物を収容した中皿を容器本体内に装着した後、蓋を嵌合して密封する構造の加熱容器が使用されている。この容器に使用される発熱ユニットは通常石灰と水の水和反応で蒸気を発生させるもので、発生した蒸気によって中皿に収容された内容物を加熱するものである。また、発熱ユニットを使用せず、電子レンジで内容物を加熱する包装容器も使用されている。 Conventionally, it is a synthetic resin packaging container consisting of a container body, an inner dish and a lid. After the heating unit is stored at the bottom of the container body and the inner dish containing the contents such as food is installed in the container body A heating container having a structure in which a lid is fitted and sealed is used. The exothermic unit used in this container usually generates steam by hydration reaction of lime and water, and heats the contents stored in the inner dish by the generated steam. Moreover, the packaging container which heats the content with a microwave oven without using a heat generating unit is also used.
これら容器は、蒸気を容器外に排出させる必要があり、種々の通気手段が検討されている。例えば、蓋のフランジ面に蒸気抜き溝を形成する容器が提案されている。しかし、内容物が汁気のある食品の場合、輸送中に汁が通気路を伝わり外部に漏れだす恐れがあるため容器と蓋を密封状態にする必要があった。 In these containers, it is necessary to discharge steam to the outside of the container, and various ventilation means have been studied. For example, a container in which a steam vent groove is formed on the flange surface of the lid has been proposed. However, in the case where the contents are succulent foods, it is necessary to keep the container and lid sealed since the juice may flow through the ventilation path during transportation and leak out.
特許文献１及び特許文献２には、輸送時は容器本体が密封状態にあるが加熱時は内容物から発生した蒸気が蓋を押し上げ、蒸気抜き溝を開放させることによって、蒸気を容器外に排出させる蒸気排出機構を設けた電子レンジ用加熱用食品包装容器が開示されている。しかし、このような容器は、加熱した際に発生する蒸気が蒸気抜き溝で凝結して容器の周囲を汚してしまうことがあった。 In Patent Document 1 and Patent Document 2, the container body is in a sealed state during transportation, but when heated, the steam generated from the contents pushes up the lid and opens the steam vent groove to discharge the steam out of the container. A heating food packaging container for a microwave oven provided with a steam discharge mechanism is disclosed. However, in such a container, steam generated when heated may condense in the steam vent groove and contaminate the periphery of the container.
本発明は、このような状況に鑑みてなされた発明である。すなわち、本発明の課題は、汁気のある食品などを店頭で販売する時や持ち帰る際に汁漏れを防止でき、かつ、加熱時に蒸気を容器外にスムーズに排出することによって容器本体から蓋、中皿が外れることを防止でき、さらに、容器外に排出された蒸気によって容器の周囲が汚れることを防止できる容器の提供を目的とする。 The present invention has been made in view of such a situation. That is, the object of the present invention is to prevent the leakage of juice when selling savory food etc. at the storefront or when taking it home, and by discharging steam out of the container smoothly during heating, the lid from the container body, It is an object of the present invention to provide a container that can prevent the middle dish from being removed, and can further prevent the surroundings of the container from being contaminated by the vapor discharged outside the container.
すなわち、本発明の包装容器は、以下の構成を有するものである。
（１）上方に開口部を有する容器本体と、前記容器本体に嵌合させて前記開口部を塞ぐ中皿と、前記中皿に嵌合させる蓋とから構成される合成樹脂製の包装容器であって、
前記中皿の側壁の一部を内側へ膨出させて形成した蒸気誘導部と、前記蓋の側壁の一部を内側へ膨出させて形成した蒸気遮断部とを有する蒸気誘導機構を備え、前記蒸気誘導部に設けられた蒸気誘導孔を前記蒸気遮断部に設けられた閉塞面で閉塞でき、前記蓋が移動して、前記蒸気誘導孔を開放する包装容器。
（２）前記蒸気誘導孔は、貫通孔及び切込みから選択される少なくとも１種である（１）に記載の包装容器。
（３）前記中皿の側壁上端部には全周に亘って内側へ膨出した中皿側壁突条が設けられ、前記蓋のフランジ側壁下端部には全周に亘って外側へ膨出した蓋フランジ突条が設けられ、前記蓋が移動した際、前記蓋フランジ突条が前記中皿側壁突条に当接する（１）または（２）に記載の包装容器。
（４）前記包装容器全体をスリーブまたはシュリンクフィルムで覆った（１）〜（３）のいずれかに記載の包装容器。
（５）前記容器本体内に発熱ユニットを有する（１）〜（４）のいずれかに記載の包装容器。
That is, the packaging container of the present invention has the following configuration.
(1) A synthetic resin packaging container comprising: a container body having an opening on the upper side; a middle dish that is fitted to the container body to close the opening; and a lid that is fitted to the middle dish. There,
A steam guide mechanism having a steam guide part formed by inflating a part of the side wall of the inner dish and a steam blocking part formed by inflating a part of the side wall of the lid; The packaging container which can block | close the vapor | steam induction hole provided in the said vapor | steam induction part with the obstruction | occlusion surface provided in the said vapor | steam interruption | blocking part, and the said lid | cover moves and opens the said vapor | steam induction hole.
(2) The packaging container according to (1), wherein the steam guide hole is at least one selected from a through hole and a cut.
(3) A middle dish side wall ridge that bulges inward over the entire circumference is provided at the upper end part of the side wall of the middle dish, and a lower part of the flange side wall of the lid bulges outward over the entire circumference. The packaging container according to (1) or (2), wherein a lid flange ridge is provided, and the lid flange ridge contacts the middle dish side wall ridge when the lid moves.
(4) The packaging container according to any one of (1) to (3), wherein the entire packaging container is covered with a sleeve or a shrink film.
(5) The packaging container according to any one of (1) to (4), wherein the container body has a heat generating unit.
本発明における包装容器は、密封性を有する蓋を使用することにより、輸送時に中皿内に収容した食品に含まれる汁が容器外へ漏れるのを防止できると共に、蓋に設けられた閉塞面が中皿の通気面に設けられた蒸気誘導孔を塞ぐ構造なので、容器の未使用時に中皿内に収容した食品に含まれる汁が容器本体内に流入するのを防止できるものである。 The packaging container according to the present invention can prevent the juice contained in the food contained in the inner dish during transportation from leaking out of the container by using a sealing lid, and has a closed surface provided on the lid. Since the steam guide hole provided in the ventilation surface of the middle dish is closed, the juice contained in the food stored in the middle dish can be prevented from flowing into the container body when the container is not used.
また、本発明における包装容器は、加熱した時に、容器本体内で発生した蒸気が、蒸気誘導孔を介して閉塞面を押し上げ蒸気誘導孔を開放し、中皿の内側に流れるので、中皿が容器本体から外れることを防止できる。 In addition, when the packaging container according to the present invention is heated, the steam generated in the container body pushes the closed surface through the steam guide hole, opens the steam guide hole, and flows to the inside of the middle dish. It can prevent coming off from the container body.
さらに、本発明における包装容器は、中皿内に流入した水蒸気が蓋の天面に設けられた蒸気排出部から放出されるので、容器の周囲に蒸気が排出せず、容器の周囲が水滴で汚れることを防止できる。 Further, in the packaging container according to the present invention, since the water vapor that has flowed into the inner dish is released from the vapor discharge part provided on the top surface of the lid, the vapor is not discharged around the container, and the container is surrounded by water droplets. It can prevent getting dirty.
以下、本発明の一実施形態に係る包装容器について図面を参酌しつつ説明する。 Hereinafter, a packaging container according to an embodiment of the present invention will be described with reference to the drawings.
〔包装容器全体の構成〕
図１は、本発明の包装容器全体の構成を示す斜視図である。本発明における包装容器Ａは、図１に示すように、上方に開口部を有する容器本体１Ａと、該容器本体１Ａ内に収容させると共に該容器本体１Ａに嵌合させて容器本体の開口部を塞ぐ中皿２と、該中皿２に密着嵌合させて中皿の開口部を塞ぐ蓋３とから構成される。
[Configuration of the entire packaging container]
FIG. 1 is a perspective view showing the overall configuration of the packaging container of the present invention. As shown in FIG. 1, the packaging container A according to the present invention has a container body 1A having an opening on the upper side, and is accommodated in the container body 1A and is fitted into the container body 1A to open the opening of the container body. The middle tray 2 is closed and the lid 3 is tightly fitted to the middle tray 2 to block the opening of the middle tray.
〔容器本体、中皿及び蓋の素材等〕
容器本体、中皿及び蓋は、何れも合成樹脂シート製であって、いわゆるシート成型により得られたものであり、加熱容器用とするため、耐熱性を有する合成樹脂シートを用いると良い。シート成型としては例えば真空成型、圧空成型、真空圧空成型、両面真空成型、熱板成型等があり、何れにしても合成樹脂シートを熱成型することにより得られる。ここで、合成樹脂シートとしては、例えばポリエチレンテレフタレート、ポリスチレン、ポリプロピレンやポリエチレン等のポリオレフィン等からなるシート、これらのシート素材に無機物を配合したシート、これらのシート素材を発泡させた発泡シート、更には、これらのシートを延伸させた延伸シートなどを使用できる。容器本体及び中皿に用いる合成樹脂シートとしては、耐熱性のあるポリプロピレンシート、またはポリプロピレンに無機物など各種添加剤を配合したシート、またはポリプロピレンの発泡シート、さらには異なる素材を積層させたシートを用いることが好ましい。また、蓋に用いる合成樹脂シートとしては、透明性の面から、二軸延伸ポリスチレンシートや、非結晶ポリエチレンテレフタレートを用いることが好ましい。また、成型済みの市販品を使用することもでき、たとえば、容器本体にフクビ化学工業株式会社製ナルホット（登録商標）ＮＷＰ３５０Ｆ（ポリプロピレン製、直径 φ１６３、高さ７９ｍｍ）が使用される。
[Material of container body, inner plate and lid]
The container main body, the inner dish, and the lid are all made of a synthetic resin sheet, and are obtained by so-called sheet molding. For use in a heating container, a heat-resistant synthetic resin sheet may be used. Examples of sheet molding include vacuum molding, pressure molding, vacuum pressure molding, double-sided vacuum molding, hot plate molding, and the like, and in any case, it can be obtained by thermoforming a synthetic resin sheet. Here, as the synthetic resin sheet, for example, a sheet made of polyethylene terephthalate, polystyrene, polyolefin such as polypropylene or polyethylene, a sheet in which an inorganic substance is blended with these sheet materials, a foamed sheet obtained by foaming these sheet materials, A stretched sheet obtained by stretching these sheets can be used. As a synthetic resin sheet used for the container body and the inner dish, a heat-resistant polypropylene sheet, a sheet in which various additives such as inorganic substances are blended with polypropylene, a polypropylene foam sheet, or a sheet in which different materials are laminated is used. It is preferable. Moreover, as a synthetic resin sheet used for a lid | cover, it is preferable to use a biaxially-stretched polystyrene sheet and an amorphous polyethylene terephthalate from a transparency surface. Moreover, the molded commercial item can also be used, for example, Fukubi Chemical Co., Ltd. Naruhot (trademark) NWP350F (a polypropylene, diameter (phi) 163, height 79mm) is used for a container main body.
〔容器本体の構成〕
図１に示すとおり、包装容器Ａの容器本体１Ａは、本体底壁１１と、本体底壁１１の外周部から立設された本体側壁１２と、本体側壁１２の上端部から外周方向へ延設された本体フランジ１３とから構成されている。
本体フランジ１３は、本体側壁１２から連続する本体フランジ上壁１３ａと、本体フランジ上壁１３ａの外周端から降下する本体フランジ側壁１３ｂと、本体フランジ側壁１３ｂの下端から外周方向へ延設された本体フランジ端部１３ｃとから構成される。容器本体は、厚さは、０．２〜０．５ｍｍの範囲が好ましく、より好ましくは０．２〜０．３ｍｍである。この範囲であれば、成型性・経済性、強度等の点から適している。
[Construction of the container body]
As shown in FIG. 1, a container main body 1 </ b> A of a packaging container A includes a main body bottom wall 11, a main body side wall 12 erected from an outer peripheral portion of the main body bottom wall 11, and an outer peripheral direction extending from an upper end portion of the main body side wall 12. The main body flange 13 is formed.
The main body flange 13 includes a main body flange upper wall 13a continuous from the main body side wall 12, a main body flange side wall 13b descending from the outer peripheral end of the main body flange upper wall 13a, and a main body extending in the outer peripheral direction from the lower end of the main body flange side wall 13b. It is comprised from the flange end part 13c. The container body preferably has a thickness in the range of 0.2 to 0.5 mm, more preferably 0.2 to 0.3 mm. If it is this range, it is suitable from points, such as a moldability, economical efficiency, and intensity | strength.
〔中皿の構成〕
中皿は、中皿底壁２１と、中皿底壁２１の外周部から立設された中皿側壁２２と、中皿側壁２２の上端部から外周方向へ延設された中皿フランジ２３とから構成されている。
中皿側壁２２は、上端寄りの位置に全周に亘って段２４が形成され、段２４より上方の中皿上部側壁２２ａ、段２４より下方の中皿下部側壁２２ｂとからなる。中皿上部側壁２２ａの上端部には全周に亘って内方へ膨出した中皿側壁突条２２ｃが形成されている。中皿下部側壁２２ｂの一部には、内方へ膨出した蒸気誘導部２５が形成され、蒸気誘導部２５の上部には蒸気誘導孔２７を設けた通気面２６が形成されている。蒸気誘導部２５は、１つでも良く、複数あってもよい。蒸気誘導孔２７は、Ｕ字状切込みでも他の形状でもよい。
中皿フランジ２３は、中皿上部側壁２２ａから連続する中皿フランジ上壁２３ａと、中皿フランジ上壁２３ａの外周端から降下する中皿フランジ側壁２３ｂと、中皿フランジ側壁２３ｂの下端から外周方向へ延設された中皿フランジ端部２３ｃとから構成されている。中皿フランジ側壁２３ｂの下端部には内方へ膨出した中皿フランジ突条２３ｄが形成されている。また、中皿の厚みは、０．１〜１．０ｍｍの範囲が好ましく、より好ましくは０．２〜０．５ｍｍである。この範囲であれば、成型性・経済性、強度等の点から適している。
[Composition of middle plate]
The middle dish includes a middle dish bottom wall 21, a middle dish side wall 22 erected from the outer periphery of the middle dish bottom wall 21, and a middle dish flange 23 extending from the upper end of the middle dish side wall 22 in the outer circumferential direction. It is composed of
The middle dish side wall 22 is formed with a step 24 over the entire circumference at a position near the upper end, and includes a middle dish upper side wall 22 a above the step 24 and a middle dish lower side wall 22 b below the step 24. At the upper end of the middle dish upper side wall 22a, a middle dish side wall protrusion 22c bulging inward over the entire circumference is formed. A steam guiding portion 25 bulging inward is formed in a part of the middle dish lower side wall 22b, and a ventilation surface 26 provided with a steam guiding hole 27 is formed in the upper portion of the steam guiding portion 25. There may be one steam guide 25 or a plurality of steam guides 25. The steam guide hole 27 may be a U-shaped cut or another shape.
The middle dish flange 23 includes a middle dish flange upper wall 23a continuous from the middle dish upper side wall 22a, a middle dish flange side wall 23b descending from the outer circumferential edge of the middle dish flange upper wall 23a, and an outer circumference from the lower end of the middle dish flange side wall 23b. It is comprised from the intermediate plate flange end part 23c extended in the direction. A middle dish flange ridge 23d bulging inward is formed at the lower end of the middle dish flange side wall 23b. Further, the thickness of the intermediate dish is preferably in the range of 0.1 to 1.0 mm, more preferably 0.2 to 0.5 mm. If it is this range, it is suitable from points, such as a moldability, economical efficiency, and intensity | strength.
〔蓋の構成〕
蓋は、天面壁３１と、天面壁３１の外周部から降設された蓋側壁３２と、蓋側壁３２の下端部から外周方向へ延設された蓋フランジ３３とから構成される。天面壁３１にはＵ字状の切欠きからなる蒸気排出部３１ａが設けられている。蓋側壁３２の一部には、下方へ膨出した蒸気遮断部３４が形成され、蒸気遮断部３４の下端部には閉塞面３５が形成されている。
蓋フランジ３３は、蓋側壁３２から連続する蓋フランジ下壁３３ａと、蓋フランジ下壁３３ａの外周端から上昇する蓋フランジ側壁３３ｂと、蓋フランジ側壁３３ｂの上端から外周方向へ延設された蓋フランジ端部３３ｃとから構成されている。蓋フランジ側壁３３ｂの下端部には全周に亘って外方へ膨出した蓋フランジ突条３３ｄが形成されている。また、蓋の厚みは、０．１〜１．０ｍｍの範囲が好ましく、より好ましくは０．２〜０．５ｍｍである。この範囲であれば、成型性・経済性、強度等の点から適している。
[Configuration of lid]
The lid includes a top wall 31, a lid side wall 32 that descends from the outer periphery of the top wall 31, and a lid flange 33 that extends from the lower end of the lid side wall 32 toward the outer periphery. The top wall 31 is provided with a steam discharge part 31a made of a U-shaped notch. A steam blocking part 34 bulging downward is formed on a part of the lid side wall 32, and a closing surface 35 is formed on the lower end of the steam blocking part 34.
The cover flange 33 includes a cover flange lower wall 33a continuous from the cover side wall 32, a cover flange side wall 33b rising from the outer peripheral end of the cover flange lower wall 33a, and a cover extending from the upper end of the cover flange side wall 33b in the outer peripheral direction. It is comprised from the flange end part 33c. A lid flange protrusion 33d is formed at the lower end of the lid flange side wall 33b so as to bulge outward over the entire circumference. The lid thickness is preferably in the range of 0.1 to 1.0 mm, more preferably 0.2 to 0.5 mm. If it is this range, it is suitable from points, such as a moldability, economical efficiency, and intensity | strength.
〔容器嵌合時の状態〕
容器嵌合時の状態を、図１〜３を用いて説明する。図２に示すように、包装容器Ａは、容器本体１Ａに発熱ユニット４が収容され、中皿２に食品が収容される。
容器本体１Ａの中に中皿２を収容して押し込むと、中皿フランジ突条２３ｄが本体フランジ端部１３ｃを乗り越えて本体フランジ端部１３ｃの下に係止して容器本体１Ａと中皿２が嵌合状態となる。
[Condition when container is fitted]
The state at the time of container fitting is demonstrated using FIGS. As shown in FIG. 2, in the packaging container A, the heat generating unit 4 is accommodated in the container body 1 </ b> A, and the food is accommodated in the inner dish 2.
When the intermediate tray 2 is accommodated and pushed into the container body 1A, the intermediate tray flange ridge 23d gets over the main body flange end 13c and locks under the main body flange end 13c, and the container main body 1A and the intermediate tray 2 are inserted. Is in a fitted state.
また、中皿２の開口部を塞ぐように蓋３を被せて押し込むと、蓋フランジ突条３３ｄが中皿側壁突条２２ｃを乗り越え中皿側壁突条２２ｃの下方位置まで嵌入して、蓋フランジ突条３３ｄの外周面が中皿上部側壁２２ａの内周面に接した状態で中皿２と蓋３が嵌合状態となる。中皿側壁突条２２ｃと蓋フランジ突条３３ｄの間に隙間があるため、閉塞面３５は通気面２６に対して上下方向に移動可能である。 Further, when the cover 3 is pushed so as to close the opening of the intermediate dish 2 and pushed in, the cover flange protrusion 33d gets over the intermediate dish side wall protrusion 22c and is inserted to a position below the intermediate dish side wall protrusion 22c. The intermediate dish 2 and the lid 3 are in a fitted state with the outer peripheral surface of the protrusion 33d in contact with the inner peripheral surface of the intermediate dish upper side wall 22a. Since there is a gap between the middle dish side wall protrusion 22 c and the lid flange protrusion 33 d, the closing surface 35 can move in the vertical direction with respect to the ventilation surface 26.
輸送、保管時において、閉塞面３５が上方向に摺動すると、中皿に収容された具材等が、通気面２６を通過して、容器本体１Ａに漏れ込むおそれがあるため、容器本体１Ａ、中皿２、蓋体３を嵌合させた状態で包装容器Ａ全体をスリーブ５またはシュリンクフィルムで覆うことにより、蒸気誘導孔２７が塞がれている状態を維持できる。 When the closed surface 35 slides upward during transportation and storage, the ingredients stored in the inner tray may pass through the ventilation surface 26 and leak into the container body 1A. By covering the entire packaging container A with the sleeve 5 or the shrink film while the inner tray 2 and the lid 3 are fitted, the state where the steam guide hole 27 is closed can be maintained.
〔容器加熱時の状態〕
図２に示す容器本体１Ａに収容された発熱ユニット４は、石灰と水の水和反応で蒸気を発生させて中皿に収容された内容物を加熱するものである。発熱ユニット４には発熱を開始させるための作動紐４１が取り付けてあり、該作動紐４１は容器本体１Ａの側壁に設けた孔から容器外へ延びている。作動紐４１を引くと発熱ユニット４が作動し蒸気が発生する。容器本体１Ａ内に発生した蒸気によって、中皿２の蒸気誘導孔２７を介して蓋３の閉塞面３５に対して押圧力が働き、閉塞面３５が通気面２６から離れる方向（上方）に移動する。閉塞面３５が通気面２６から離れると蒸気誘導孔２７が開放され蒸気が容器本体１Ａ内から中皿２内に誘導される。容器本体１Ａ内から中皿２内に蒸気が流れることによって容器本体１Ａ内の圧力上昇が制限され、容器本体１Ａから中皿２が外れるのを防止できる。包装容器Ａには、閉塞面３５と通気面２６とによって蒸気誘導孔２７を開閉する蒸気誘導機構が形成されている。
[Condition when container is heated]
The heat generating unit 4 accommodated in the container main body 1A shown in FIG. 2 generates steam by the hydration reaction of lime and water to heat the contents accommodated in the inner dish. An operating string 41 for starting heat generation is attached to the heat generating unit 4, and the operating string 41 extends out of the container through a hole provided in the side wall of the container body 1A. When the operating string 41 is pulled, the heat generating unit 4 operates and steam is generated. The steam generated in the container main body 1 </ b> A exerts a pressing force on the closing surface 35 of the lid 3 through the steam guide hole 27 of the inner tray 2, and the closing surface 35 moves in a direction (upward) away from the ventilation surface 26. To do. When the closing surface 35 is separated from the vent surface 26, the steam guide hole 27 is opened, and the steam is guided from the container body 1A into the inner tray 2. The increase in pressure in the container body 1A is restricted by the flow of steam from the container body 1A into the middle dish 2, and the middle dish 2 can be prevented from being detached from the container body 1A. The packaging container A is formed with a steam guide mechanism that opens and closes the steam guide hole 27 by the closing surface 35 and the vent surface 26.
通気面２６に設けた蒸気誘導孔２７はＵ字状の切込みでも貫通孔であってもよい。貫通孔の形状は、円形に限定されるものではなく、楕円形や多角形、その他の形状であってもよい。また、切込みの形状は、一般的にＵ字状の切込みを使用することが多いが、Ｕ字状に限定されるものではない。蒸気誘導孔２７は、その大きさや数を適宜選択することによって、閉塞面３５を押し上げる蒸気押圧力を調整することができる。 The steam guide hole 27 provided in the ventilation surface 26 may be a U-shaped cut or a through hole. The shape of the through hole is not limited to a circle, and may be an ellipse, a polygon, or other shapes. In addition, the shape of the cut generally uses a U-shaped cut, but is not limited to a U-shape. The steam pressure of the steam guide hole 27 can be adjusted by appropriately selecting the size and number of the steam guide holes 27 to push up the closing surface 35.
図３は、容器の加熱時の状態を示す断面図である。蒸気誘導孔２７が開放され蒸気が中皿２内に流入すると中皿内の圧力が高くなり、図３に示すように、蓋３は、押し上げられて中皿２から離れる方向（上方向）に移動する。蓋３は中皿２から上方向に、中皿側壁突条２２ｃと蓋フランジ突条３３ｄ間の隙間Ｈ分だけ移動可能であり、蓋フランジ突条３３ｄと中皿側壁突条２２ｃに当接されるので蓋３が外れないようになっている。 FIG. 3 is a cross-sectional view showing a state during heating of the container. When the steam guide hole 27 is opened and the steam flows into the middle dish 2, the pressure in the middle dish increases, and the lid 3 is pushed up and away from the middle dish 2 (upward direction) as shown in FIG. Moving. The lid 3 is movable upward from the middle tray 2 by a gap H between the middle dish side wall ridge 22c and the lid flange ridge 33d, and is in contact with the lid flange ridge 33d and the middle dish side wall ridge 22c. Therefore, the lid 3 cannot be removed.
蓋３の天面壁３１にはＵ字状の切欠きからなる蒸気排出部３１ａが形成されていて、中皿内の圧力が高くなると蒸気排出部３１ａから蒸気が放出される。蒸気排出部３１ａは切込みに限定されるものではなく貫通孔であってもよい。蒸気排出部３１ａは、その大きさや数を適宜選択することによって、蓋３を押し上げる蒸気押圧力を調整することができる。蒸気排出部３１ａから蒸気が排出されることによって中皿２内の圧力上昇が制限され中皿２から蓋３が外れるのを防止できる。 The top wall 31 of the lid 3 is formed with a steam discharge part 31a formed of a U-shaped notch, and steam is released from the steam discharge part 31a when the pressure in the inner dish becomes high. The steam discharge part 31a is not limited to the cut and may be a through hole. The steam discharge part 31a can adjust the steam pressing force which pushes up the lid | cover 3 by selecting the magnitude | size and number suitably. It is possible to prevent the lid 3 from being removed from the inner tray 2 by limiting the pressure increase in the inner tray 2 by discharging the steam from the steam discharge section 31a.
図４は、電子レンジ加熱用包装容器に内容物を収容したものであり、図２、３の発熱部分に換え、米飯を収容したものである。 FIG. 4 shows the contents stored in a microwave heating packaging container, and contains cooked rice instead of the heat generating parts shown in FIGS.
１Ａ、１Ｂ容器本体
１１ 本体底壁
１２ 本体側壁
１３ 本体フランジ
１３ａ 本体フランジ上壁
１３ｂ 本体フランジ側壁
１３ｃ 本体フランジ端部
２ 中皿
２１ 中皿底壁
２２ 中皿側壁
２２ａ 中皿上部側壁
２２ｂ 中皿下部側壁
２２ｃ 中皿側壁突条
２３ 中皿フランジ
２３ａ 中皿フランジ上壁
２３ｂ 中皿フランジ側壁
２３ｃ 中皿フランジ端部
２３ｄ 中皿フランジ突条
２４ 段
２５ 蒸気誘導部
２６ 通気面
２７ 蒸気誘導孔
２８ 蒸気誘導部側面
３ 蓋
３１ 天面壁
３１ａ 蒸気排出部
３２ 蓋側壁
３３ 蓋フランジ
３３ａ 蓋フランジ下壁
３３ｂ 蓋フランジ側壁
３３ｃ 蓋フランジ端部
３３ｄ 蓋フランジ突条
３４ 蒸気遮断部
３５ 閉塞面
３６ 蒸気遮断部側面
４ 発熱ユニット
４１ 作動紐
４２ 生石灰
４３ 水袋
５ スリーブ（紙の帯）
６ 米飯
Ａ、Ｂ 包装用容器
1A, 1B Container body 11 Body bottom wall 12 Body side wall 13 Body flange 13a Body flange top wall 13b Body flange side wall 13c Body flange end 2 Middle dish 21 Middle dish bottom wall 22 Middle dish side wall 22a Middle dish upper side wall 22b Middle dish lower part Side wall 22c Middle dish side wall ridge 23 Middle dish flange 23a Middle dish flange upper wall 23b Middle dish flange side wall 23c Middle dish flange end 23d Middle dish flange ridge 24 steps 25 Steam guide part 26 Ventilation surface 27 Steam guide hole 28 Steam guide Part side 3 Lid 31 Top wall 31a Steam exhaust part 32 Lid side wall 33 Lid flange 33a Lid flange lower wall 33b Lid flange side wall 33c Lid flange end 33d Lid flange ridge 34 Steam blocking part 35 Closing surface 36 Steam blocking part side 4 Heat generation Unit 41 Working string 42 Quicklime 43 Water bag 5 Sleeve (paper band)
6 Cooked rice A, B Packaging containers
Claims (5)
前記中皿の側壁の一部を内側へ膨出させて形成した蒸気誘導部と、前記蓋の側壁の一部を内側へ膨出させて形成した蒸気遮断部とを有する蒸気誘導機構を備え、前記蒸気誘導部に設けられた蒸気誘導孔を前記蒸気遮断部に設けられた閉塞面で閉塞でき、前記蓋が移動して、前記蒸気誘導孔を開放する包装容器。 A packaging body made of a synthetic resin, comprising: a container body having an opening on the upper side; a middle dish fitted into the container body to close the opening; and a lid fitted into the middle dish;
A steam guide mechanism having a steam guide part formed by inflating a part of the side wall of the inner dish and a steam blocking part formed by inflating a part of the side wall of the lid; The packaging container which can block | close the vapor | steam induction hole provided in the said vapor | steam induction part with the obstruction | occlusion surface provided in the said vapor | steam interruption | blocking part, and the said lid | cover moves and opens the said vapor | steam induction hole.
The packaging container as described in any one of Claims 1-4 which has a heat-emitting unit in the said container main body.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP7110457B1 (en) * | 2021-07-21 | 2022-08-01 | 株式会社エフピコ | Inner dish for microwave oven container and container for microwave oven |
| WO2023158011A1 (en) * | 2022-02-17 | 2023-08-24 | 주식회사 에코시락 | Heat-generating food container capable of easily supplying water vapor into inner container |
| JP7381828B1 (en) | 2022-12-26 | 2023-11-16 | 株式会社ビーアンドテーマリンプロダクツカンパニー | Container for defrosting frozen sushi |
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| JP7026539B2 (en) | 2022-02-28 |
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